||These STIS CCD superbias and superdark files are being delivered to ensure that STIS CCD data taken between August 24 2022 and November 19 2022 are receiving the expected calibration support in correcting for the effects of dark current and bias noise present in the data.
||These ACS WFC dark and CTE-corrected dark reference files are older versions of files currently in CRDS and need to be deleted from the rmap. These old files must have not been replaced correctly in the last large dark delivery in 2020 due to the CCDGAIN values of -1 expanding to slightly different values -- 0.5, 1.0, 1.4, 2.0, 4.0, 8.0 in new files and 0.5, 1.0, 1.4, 2.0 in old files. The correct expansion going forward is the new one, so the old files must be deleted to reflect this.
||The ACS WFC bias, dark, CTE dark, and sink files were generated following the ACS WFC anneal on Nov 12, 2022, and should be used to calibrate ACS WFC observations taken between Oct 14, 2022 and Nov 12, 2022.
||This new bad pixel table, USEAFTER September 29, 2022, was generated using data taken from September 30, 2022 through October 24, 2022. Currently, the Calibration Reference Data System only has WFC3 UVIS bad pixel reference tables up to a USEAFTER date of September 1, 2022. The automated pipeline should now use this reference file as the bad pixel table on any UVIS datasets obtained between the dates above, or beyond because they represent the most accurate measure of pixel stability at the time of the science observation. This WFC3 UVIS bad pixel file was generated using 900 second dark exposures from the HST Cycle 29 daily monitoring programs 16564 and 16568. More information about the UVIS bad pixel tables is outlined in the WFC3 ISR 2018.15 and WFC3 ISR 2021.14.